Were it not Kipling, I wouldn’t include this story in the list, since its time-travel content is questionable: Are those Marconi experiments of young Mr. Cashell really bringing John Keats’s thoughts from a century in the past to the drug-tranced Mr. Shaynor?
“He told me that the last time they experimented they put the pole on the roof of one of the big hotels here, and the batteries electrified all the water-supply, and”—he giggled—“the ladies got shocks when they took their baths.” 
Rudyard Kipling, Master Traveller
Admitedly, Rudyard Kipling is not known as a time traveling pioneer, yet early on, my Grandpa awarded him a Master Traveller Citation, most likely more for the chronotypical adventures of Captains Courageous and Mowgli than for Puck or for his earlier “Wireless” story.